Speaker compatablity for my new home theater

I just sold my Samsung hw-c560s HTIB and used the $ to buy a used Denon 3310. First off, your thoughts on what kind of a deal you think I got on the Denon, and whether or not it is quality.

Secondly, for speakers, I ditched the Polk Blackstone idea in seach of lower frequencies, and I have decided I am going to have a Polk CS20 or CS10 center speaker, and a pair of tsi-200 for the front. I would like to know what you think of those choices of speakers to go with MY receiver specifically, and then just what you think about those speakers in general.

And lastly, what do you recommend for the other 4 surround and back speakers? I would like to go as small as possible on those, as I already caved in on getting the larger speakers for the front. I am in a 20x15 apt. I don't want to get the cops called on me...too often

Maybe 4 Blackstone tl2's. Sounds fantastic in my mind!!

Thanks

Got the Denon for 3110 for $350 cash in mint condition.

I have resigned myself the fact that I am going to be going 2.1 for a month or two...choosing quality over 7.1 instant gratification. So, I would like to spend not a penny more than $400 out the door for two quality fronts and a center. I was thinking Polk CS10 or a CS20 center with two TSi 200's.

I already have a Polk psw-111. I like it just fine for the space I'm in. Nothing more powerful would be tolerated by neighbors, and I much prefer tighter, snappier, 80~100hz bass anyhow. I think 8" subs are good for that. So the sub does NOT factor into the budget. Sub and receiver are bought and paid for, as is 55" 120hz Samsung Led, and 16AWG OFC speaker wire which is run no more than 25'.